23 lines
548 B
Ruby
23 lines
548 B
Ruby
# frozen_string_literal: true
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class Reference < ApplicationRecord
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belongs_to :source, polymorphic: true
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belongs_to :target, polymorphic: true
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validates :target_id, uniqueness: {scope: %i[target_type source_id source_type]}
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module Source
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extend ActiveSupport::Concern
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included do
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has_many :references, as: :source, dependent: :destroy
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end
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end
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module Target
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extend ActiveSupport::Concern
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included do
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has_many :referenced_by, as: :target, class_name: "Reference", dependent: :destroy
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end
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end
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end
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